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� Kr.uner, Chin � �9a��o, Inc. ���'1 <br /> ��� <br /> I <br /> �'!ardi 'I(,, 1">: - <br /> /'r!' _� +' . . <br /> J '. A � <br /> Mr. Kirk Breoks ' <br /> Puhiir. 'Norks Uepartment /: <br /> ;,2pp Cedar Streer <br /> �i;erelt, {A':+ :?8?01 �' <br /> Su'rjc�:'.: Proposed DeteriQion Facility <br /> Central O�eratirig Base Phase :I A4asier Plan, liverett,Wasl�i�zgton <br /> l:�ear h.4r. Sru;�ks: � <br /> T'Ieas� pro�•.ide an estimate of lhe delention capacity required for Communily <br /> 'Ir3r.siCs Ce:nlrai C)peraling BaSe. 1 am forwardinF the infonnation yr.0 recuesied <br /> j,om Jay Smith in a i�4arch 11 telephone conversalion You should also be r�.;eivinr <br /> i�7 lh< r.�ail, duplicate copies o( everylhinQ ;nc:udrd in this fax transmil!al ai��ng <br /> wi,t� t'tze site pians. <br /> T'+•�e area ef the Community Transit property is 20.0 acres. The area of the site <br /> cerresrondirp; to lhe area used in the calculations for the existing detention facility <br /> wa; 16.4 acre5, however, it has Ueen detenr.ined that this value indudes sonie area <br /> which is �ot !ributary to the exisling detentio� pand. The actual area whic:: is <br /> c.;rrenll�• trib�lary to the delenlion facilil�� has Uaen determined from the site pians <br /> ;o uc 7 1.5 zc�!'e•�. Therefore, a tota! of 8.7 acres of 1he peoperty does not contriUi�,e !o <br /> !l�,e eti::t��ig detention pond. 'Che amcunt uf impervious surface area that is <br /> ;.arrer,ily p,�rt ot the 77.� acm�ile !utals 7S acres. The nverage p,roun:l slo�,e is 0.0C'8 <br /> Il!iL Aca:r�iing lo U�e �nclu;ed Urainaye Plar. Submiesion rorm daled 3/7%34, tl�e <br /> c.ietenti�,si �r.urage requireme„!, bnsed upon l�i.: tributa:�� acres, was deiermined lo L•e <br /> ?"' ;3; culr,'c ieel ���i1h an allowabie reir.aee rate of 0.;� cFs. 7'he attached r.uevev <br /> lli'��i.Nii'� �)::it ��11? ?1:15i3I1h C011l'JI118�1OI1 OI� �,-ate: separator/deter;t10:1 �JOI1(1 �18's .l <br /> �ie:etiliu�i :::pacity of 32,R60 :ai'r�lo-:er�t. <br /> :I�r. �,rn�;oscd 3'hase U �ie:eli�pnx:ut plan call, (nr t!�e replace��icnt nf the existin;; <br /> littipl11.10!1 i`i�i'�ij N^,f�ll eP ii:1i?C''f;l'�?illl�i f�Pii':�!011 V2U�� 3?1(j ��lc' COTIg�*�1CtlCR Ctl <br /> 2l�(;1!10i13� :'i!Illl'�B m��i�ilenancN �ACI�l�IfS. i�:C �G;i1i ara:� of Uie 'Plra�e Ii 51��• �+ �:f.tl <br /> '1t7'Pti. !;g nnPl p: l}L� ��2I1, t�, t`; ��f0(�OSCIj ��18t tllC IUIlOf1 jCClll iV:O O� l�`.E� <br /> *..ninter.an�::c h�.�ildinhs, a tctal of J.1 r�crec, be di�•�rled :o the adjasnt w,�tlancl tnr <br /> d�,tentinn cturage. "Chis adc9cd ru�;�iif i�; rrquired tc� surpo�t thc we?land p!3nt� Ai <br /> �.ill' U!;!i':� U� ��1" ��•�'�i811(�� �� C01111'Ol J}�titf`Ilt� $lll7!�iU' �.O S ��-i1J�l"Il"2(� 4VeIT� 1Vi), Pt:�l'iC� <br /> d�a nutt�u�':. The rttnofi from the rern:iiniiig ll; 9 arres of thr. de��elooed site tvil( <br /> Iiu�s lo ;Le ne�a comi�inalii,n oil �v�ter sep%ir;tor(de[eniion fncility. 'fhe amount uf <br /> i�:l•�1:1'YIO'.1> Si:T�.iC� BPPfi IItBh IS W11�1111 ��115 !�.� 8C1'l'� IS �.� 3l'I'('.S. tiiC 8V£f0(�C' �[OU111� <br /> $IJ�'C iS •'.�:i.l�i`.2:j �(7 fCOldl�l i�ll' tid1118 clS ��18 t'YISlllln conditions. i'ur purp05CS l'� <br /> ;;:�ii!,v, a t:�b�iiar ��resert.i:ic'�ii o( Il�,c mr.as�red m'e.s is presenled in Table l. <br /> 1517 FnSI Avenuc. Si,1!IIc. IV,�.^��.n�tlnn '�:i101-tOd7 �2061 �4?-=30C F,1� ;"'061 �id3-�3i2 � <br /> �5 <br />